Filling-detecting mechanism for looms.



PATENTBD APR. 2, 1907.

A. E. BENSON. FILLING DETECTING MECHANISM FOR LOOMS.

* Unrrnn s'ra'rns Parana ornron.

ARTHUR E. BENSON, OF PROVIDENCE, RHODE ISLAND, ASSIGNOR TO DRAPERCOMPANY, OF I-IOPEDALE, MASSACHUSETTS, A CORPORA- TION OF MAINE.

- FILLING-'DETECTINGFQI-IxANISM FOR LOOIVIS.

Specification of Letters Patent.

Patented Aplli 2, 19 7- Application filed February 6,1907. Serial No.355.933;

To on whom it may concern.-

Be it known that I, ARTHUR E. BENsoN, a citizen of the United States,and a resident of Providence, county of Providence, State of ings, is aspecification, like letters on the drawings representing like parts.

This lnventlon has for its ob ect the production of means whereby thedetecting action of a filling-detector may be advanced or hastened, sothat the detection of the presence or absence of the filling takes placeearlier in the movement of the lay after the filling has been laid. Bythus advancing the detecting action of the detector an earlier and moreprompt operation of the mechanism, dependent upon the detection offilling absence, is gained and a-better cooperation of the detector withintact filling is effected.

The various novel features of my invention will be fully described inthe subjoined specification and particularly pointed out in thefollowing claims.

Figure 1 is a top plan view of a portion of a loom with one embodimentof my invention applied thereto, the lay being shown at or near backcenter. Fig. 2 is a transverse section thereof on the line 2 2, Fig. 1,the dotted-line position of the lay and parts thereon showing how thedetecting action of the detector is advanced. Fig. 3 is a frontelevation of a portion of the lay, the movable grid thereon, and themeans connected therewith for controlling its movement.

The lay 1, having the shuttle-raceway 2, the breast-beam 3, the fillingdetector or fork 4, pivotally mounted on a slide 5, movablelongitudinally in the stand 6 on the, breastbeam, the weft-hammer IV,Fig. 1, provided with a hook 7 to cooperate with the tail 8 of the forkwhen the latter is not tilted on the detecting-pick, may be and are allof usual construction and operate in a manner familiar to those skilledin the art.

In the present embodiment of my inven tion I provide a transverse andundercut guideway 9 (see Fig. 3) in the bottom of the usual recess 10,crossing the shuttle-raceway opposite the filling-detector, and in saidguideway is mounted a slideeblo'ck 11, provided at or near its rear endwith a series of upright fingers or bars'12, forming a grating or gridso arranged with relation to the fork that on the beat-up of the lay thetines of the fork will be opposite the spaces between the fingers of thegrid.

l/Vhen the grid is in the full-line position, Figs. 1 and 2, it is backof the shuttle-path, as with the ordinary fixed grid already in commonuse; but in my present invention I have provided means for moving thegrid forward relatively to the lay on the beat-up of the latter, so thaton the detecting-pick the detecting action of the filling fork ordetector is advanced or hastened. In other words, the detecting actiontakes place earlier in the forward movement of the lay, and by timingthe weft-hammer accordingly more time is secured between the detectionof filling absence or presence and the completion of the forward beat ofthe lay than is possible by the usual construction.

Referring to the drawings, I have shown depending bearings 13 rigidlysecured to the lay at or near the front thereof, and in said bearings ismounted a rock-shaft 14, having a rigidly-attached upturned arm 15,adapted to play in a recess 16 in the front of the lay and connected bya short link 17 with the slide 1 1. A suitable spring 18, wound aroundthe rockshaft 14 and attached at one end to the adj acent bearing 13, isat its other end secured to a collar 19, fast on the shaft. The swingingof the spring is such as to turn the rock-shaft rearwardly to positionthe slide and grid, as shown in Figs. 1 and 2, with the grid behind theshuttle-path. The rock-shaft has also attached to it a depending shortarm 20, having a lateral offset 21 arranged in the path of a bunter 22,fixedly secured to the front portion of the loom-frame, (see Fig. 2,)the said bunter having a cam-like under surface 23. The bunter is solocated that'as the lay beats up the lateral extension 21 of therocker-arm 20 will first engage the cam-face 23, and

thereby the extension 21 will be depressed to.

turn the rock-shaft 14 in its hearings in oppositio'n to the springs 18.Such rotative movement of the rock-shaft swings the arm 15 forward andchanges the position of the slide 11 on the lay from full-line position,Fig. 2, to dotted-line position in said figure. In other words, the gridis moved to a posi- ICC under the hunter 22, as will be manifest.

tion nearer the front of the lay, and conse- I forward on and withrelation to the lay on its quently nearer the filling-detector.

This I forward beat, to advance the detecting action changed position ofthe grid relatively to the of the fork.

lay is maintained as the lay completes its forward beat, for theextension 21 slides forward As the lay goes back the spring 18 willreturn the parts controlled thereby to the position shown in full lines,Fig. 2, as soon as the eX- tension 21 is disengaged from the hunter 22.

The grid is moved forward on and with relation to the lay at everyforward beat of the latter; but of course the detector acts only onalternate picks. If the filling is laid properly on the detecting-pick,the forward movement of the grid across the shuttle-pathway moves thefilling-carrier to be engaged by the detector earlier in the beat of thelay than would be the case were the grid fixedly mounted on the lay. Thetilting of the fork is effected in time thereby to enable the forktailto clear the weft-fork hook, it being remembered that with thisarrangement the weft-hammer .is timed to move forward earlier.

If on the detecting-pick the filling fails, the detector detects fillingabsence and a change in the operation of the loom is effected in anywell-known manner.

While I have shown my invention at the shipper end of the loom, it willbe manifest that it is not restricted thereto, and it can of course beapplied to each grid, if desired, on a double-fork loom, and in the caseof fillingreplenishing looms where the filling is changed on the picktoward the replenishing mechanism my invention would be of value, as byapplying it at the replenishing side of the loom an increased period oftime would be secured to set the replenishing mechanism for operation onthe detectingpick.

The specific details of construction may be varied without departingfrom the spirit and scope of my invention, and various changes inconstruction and arrangement may be made by those skilled in the artwithout departing from the spirit and scope of the invention as setforth in the claims appended hereto.

Having fully described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a loom, in combination, a lay, a grid thereon, a filling-fork tocooperate on'the for ward beat of the lay with intact filling laid infront of the grid, and means to move the grid 2. In a loom, incombination, a lay, a filling-fork to detect on the forward beat of thelay, a grid mounted on the lay opposite the fork and movabletransversely of the lay, and means to automatically move the grid towardthe front of the lay on its forward beat, to advance the detectingaction of the fork on the detecting beat.

3. In a loom, in combination, a lay, a filling-fork to detect on theforward beat of the lay, a transverse guideway on the lay opposite thefork, a slide movable in the guideway and having a grid, means to movethe slide to position the grid behind the shuttlepath when the shuttleis picked, and means to move the slide forward on the forward beat ofthe lay, to thereby position the grid to advance the detecting action ofthe fork.

4. In a loom, in combination, a lay, a filling-fork to detect on theforward beat of the lay,'a grid mounted on the lay opposite the fork andmovable transversely of the lay, spring-controlled means to move thegrid into position behind the shuttle-path when the shuttle is picked,and means to move the grid toward the front of the lay on its for wardbeat, to hasten the detecting action of the fork on the detecting beatof the lay.

5. In a loom, a lay, a filling-detector, and means operative on theforward beat of the lay and carried by the lay to move the fillingtoward the front of the lay opposite the detector, to hasten thedetecting action of the latter.

6. In a loom, in combination, a filling-detector, a lay, and meansmounted on and. movable relatively to the lay to automatically hastenthe detecting action of said detector upon intact filling on the forwardbeat of the lay.

7. In a loom, in combination, a fillingde tector, a lay, a grid thereonopposite the detector, and means operating on the beat up of the lay tomove the grid forward relatively to the lay, to thereby hasten thecooperation of the detector with the filling if present.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

. ARTHUR E. BENSON.

Witnesses:

ALBERT W. Roenns, HENRIETTA V. BLACKBURN.

ICO

